But not all white supremacist leaders are mindful of their actions or care to be.
CNN: White supremacists watched in lead up to Obama administration
White supremacist Kevin Harpham is convicted and sentenced to 32 years in federal prison.
Authorities have investigated whether Hasse's death could be linked to a white supremacist gang.
The attacker, Wade Michael Page, was a 40-year-old former soldier-turned-front man for a white supremacist rock band.
CNN: At service, Holder calls Sikh temple shooting a hate crime
Law enforcement officials confirmed reports that he belonged to a white supremacist prison gang known as the 211s.
In the slayings of the Texas district attorney and his wife, officials suspect a white supremacist prison gang.
While the number of white supremacist groups is rising, the overall impact on membership is not clear, said Levin.
Two of Mr Byrd's alleged killers had been monitored for involvement in a white supremacist group while in prison.
Prosecutors said Hall's white supremacist beliefs had nothing to do with the killing.
Most white supremacist leaders have been careful in what is posted on their Web sites, "hyper-aware that they are being watched, " Potok said.
CNN: White supremacists watched in lead up to Obama administration
Again, anyone, including Ms. Elliot, knows that I have never written anything that remotely speaks in favor of bigotry or "white supremacist" nonsense.
McLelland himself, in an Associated Press interview shortly after the Colorado slaying, raised the possibility that Hasse was gunned down by a white supremacist gang.
And they have been expecting new challenges from white supremacist groups.
Two days later, Evan Spencer Ebel, a white supremacist and former Colorado inmate suspected of shooting Clements, died in a shootout about 100 miles from Kaufman.
In 1997, South African white supremacist Eugene Terre Blanche was sentenced to six years in jail for trying to murder one black man and assaulting another.
But he was linked to white supremacist groups and Hooper said many people felt the Sikhs were mistaken for Muslims because of their turbans and beards.
It is difficult to pinpoint how many people subscribe to white supremacist views, because the Internet allows people to follow the movement under the cloak of anonymity.
CNN: White supremacists watched in lead up to Obama administration
The 211 gang is one of the most vicious white supremacist groups operating in U.S. prisons, according to the Southern Poverty Law Center, which tracks extremist groups.
Furrow, a 38-year-old avowed white supremacist, was indicted by a federal grand jury last year on charges of murder and firearms violations stemming from the killing of Ileto.
Previous possible culprits mentioned included a white supremacist prison gang known as the Aryan Brotherhood of Texas, which had been targeted by a task force that included McLelland's office.
Authorities received tips that Page might have links to the white supremacist movement, but nothing has been confirmed, according to Oak Creek Police Chief John Edwards and the FBI.
Evan Spencer Ebel, a white supremacist and former Colorado inmate suspected of shooting Clements, died in a shootout with Texas deputies two days later about 100 miles from Kaufman.
Organized attempts are made from time to time by white supremacist groups to use white power music to attract young people, but none of these attempts has truly been successful.
Garcetti's office already has issued a criminal complaint charging the 37-year-old avowed white supremacist with attempted murder in the same case, attempted murder in the Jewish center case and carjacking.
Hasse died the same day as the justice department said the Kaufman County district attorney's office was pursuing a racketeering case against the white supremacist group, the Aryan Brotherhood in Texas.
BBC: Texas district attorney third law official killed in weeks
In an interview Tuesday, MacNab explained that while the Sovereign movement has both white supremacist and tax protester roots, as it has spread (in large part over the Internet) it has also morphed.
FORBES: Expert: Loughner Rants Sound Like Sovereign Citizen Beliefs
White is now in jail on unrelated charges that he "threatened use of force against" a juror who had helped convict another white supremacist as well as several other charges of making threats to unrelated victims.
CNN: White supremacists watched in lead up to Obama administration
Evan Spencer Ebel, a former Colorado inmate and white supremacist who authorities believe killed Clements and a pizza deliveryman two days earlier, was killed in a March 21 shootout with Texas deputies about 100 miles from Kaufman.
"There is a probable hypothesis that in the event that Obama becomes president that you could have a galvanization of these white supremacist groups, " said John Karl, the officer in charge of the Los Angeles Police Department's criminal conspiracy unit.
Ebel is not on the radar of the Southern Poverty Law Center, which tracks extremist groups, but the center rates the gang as one of the most vicious white supremacist groups operating in the nation's prisons, comparable to the Aryan Brotherhood of Texas.
应用推荐